Пример #1
0
func TweakCapabilities(basics, adds, drops []string) ([]string, error) {
	var (
		newCaps []string
		allCaps = capabilities.GetAllCapabilities()
	)

	// look for invalid cap in the drop list
	for _, cap := range drops {
		if strings.ToLower(cap) == "all" {
			continue
		}
		if !utils.StringsContainsNoCase(allCaps, cap) {
			return nil, fmt.Errorf("Unknown capability: %s", cap)
		}
	}

	// handle --cap-add=all
	if utils.StringsContainsNoCase(adds, "all") {
		basics = capabilities.GetAllCapabilities()
	}

	if !utils.StringsContainsNoCase(drops, "all") {
		for _, cap := range basics {
			// skip `all` aready handled above
			if strings.ToLower(cap) == "all" {
				continue
			}

			// if we don't drop `all`, add back all the non-dropped caps
			if !utils.StringsContainsNoCase(drops, cap) {
				newCaps = append(newCaps, strings.ToUpper(cap))
			}
		}
	}

	for _, cap := range adds {
		// skip `all` aready handled above
		if strings.ToLower(cap) == "all" {
			continue
		}

		// look for invalid cap in the drop list
		if !utils.StringsContainsNoCase(allCaps, cap) {
			return nil, fmt.Errorf("Unknown capability: %s", cap)
		}

		// add cap if not already in the list
		if !utils.StringsContainsNoCase(newCaps, cap) {
			newCaps = append(newCaps, strings.ToUpper(cap))
		}
	}
	return newCaps, nil
}
Пример #2
0
func dropList(drops []string) ([]string, error) {
	if utils.StringsContainsNoCase(drops, "all") {
		var newCaps []string
		for _, cap := range capabilities.GetAllCapabilities() {
			log.Debugf("drop cap %s\n", cap)
			realCap := capabilities.GetCapability(cap)
			if realCap == nil {
				return nil, fmt.Errorf("Invalid capability '%s'", cap)
			}
			numCap := fmt.Sprintf("%d", realCap.Value)
			newCaps = append(newCaps, numCap)
		}
		return newCaps, nil
	}
	return []string{}, nil
}
Пример #3
0
func TestDropCap(t *testing.T) {
	var (
		container = template.New()
		opts      = []string{
			"cap.drop=MKNOD",
		}
	)
	// enabled all caps like in privileged mode
	container.Capabilities = capabilities.GetAllCapabilities()
	if err := ParseConfiguration(container, nil, opts); err != nil {
		t.Fatal(err)
	}

	if hasCapability("MKNOD", container.Capabilities) {
		t.Fatal("container should not have MKNOD enabled")
	}
}
Пример #4
0
func (d *driver) setPrivileged(container *libcontainer.Config) (err error) {
	container.Capabilities = capabilities.GetAllCapabilities()
	container.Cgroups.AllowAllDevices = true

	hostDeviceNodes, err := devices.GetHostDeviceNodes()
	if err != nil {
		return err
	}
	container.MountConfig.DeviceNodes = hostDeviceNodes

	container.RestrictSys = false

	if apparmor.IsEnabled() {
		container.AppArmorProfile = "unconfined"
	}

	return nil
}
Пример #5
0
func (d *driver) setPrivileged(container *libcontainer.Config) (err error) {
	container.Capabilities = capabilities.GetAllCapabilities()
	container.Cgroups.AllowAllDevices = true

	hostDeviceNodes, err := devices.GetHostDeviceNodes()
	if err != nil {
		return err
	}
	container.MountConfig.DeviceNodes = hostDeviceNodes

	delete(container.Context, "restrictions")

	if apparmor.IsEnabled() {
		container.Context["apparmor_profile"] = "unconfined"
	}

	return nil
}
Пример #6
0
func GetAllCapabilities() []string {
	return capabilities.GetAllCapabilities()
}